diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e59756b5aaa..92f167901f4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2009-03-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/38824
+	* config/i386/i386.md: Compare REGNO on the new peephole2
+	patterns.
+
 2009-03-12  Vladimir Makarov  <vmakarov@redhat.com>
 
 	PR debug/39432
diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 761a5e70c68..d68d0c83239 100644
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -20813,7 +20813,7 @@
                      [(match_dup 0)
                       (match_operand:SI 2 "memory_operand" "")]))
               (clobber (reg:CC FLAGS_REG))])]
-  "operands[0] != operands[1]
+  "REGNO (operands[0]) != REGNO (operands[1])
    && GENERAL_REGNO_P (REGNO (operands[0]))
    && GENERAL_REGNO_P (REGNO (operands[1]))"
   [(set (match_dup 0) (match_dup 4))
@@ -20829,7 +20829,7 @@
                    (match_operator 3 "commutative_operator"
                      [(match_dup 0)
                       (match_operand 2 "memory_operand" "")]))]
-  "operands[0] != operands[1]
+  "REGNO (operands[0]) != REGNO (operands[1])
    && ((MMX_REG_P (operands[0]) && MMX_REG_P (operands[1])) 
        || (SSE_REG_P (operands[0]) && SSE_REG_P (operands[1])))"
   [(set (match_dup 0) (match_dup 2))